Description extracted from Wikipedia:

Foxit Software, Inc. develops Portable Document Format (PDF) software and tools used to create, edit, sign, and secure files and digital documents. It is a multinational software technology corporation headquartered in Fremont, California, with offices in Berlin, Beijing, Fuzhou, South Yarra, Australia and other locations. There are about 425 million Foxit users, with sales to more than 100,000 customers in 200 countries around the world.